(i) Given a demand function D=150-2x and a supply function S=8x where x is price, find the (x, y) coordinates of the equilibrium point. Also, graph the demand and supply function on a single graph and label the equilibrium point on your graph.
(ii) Items cost $4 each to produce and sell for $20 each. The overhead is $1200. a) Find the cost, revenue and profit functions. b) Find the (x, y) coordinates of the breakeven point. Also graph the cost and revenue functions on the same graph and indicate the breakeven point.